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LayerInfoFileModule.cpp
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LayerInfoFileModule.cpp
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#include "LayerInfoFileModule.h"
#include "ilayer.h"
#include "ientity.h"
#include "itextstream.h"
#include "scenelib.h"
#include "scene/LayerValidityCheckWalker.h"
#include "string/convert.h"
#include "debugging/ScenegraphUtils.h"
#include "parser/DefTokeniser.h"
#include "string/join.h"
namespace scene
{
namespace
{
constexpr const char* const NODE_TO_LAYER_MAPPING = "NodeToLayerMapping";
constexpr const char* const LAYER_HIERARCHY = "LayerHierarchy";
constexpr const char* const LAYER = "Layer";
constexpr const char* const ACTIVE_LAYER = "ActiveLayer";
constexpr const char* const HIDDEN_LAYERS = "HiddenLayers";
constexpr const char* const LAYERS = "Layers";
constexpr const char* const LAYER_PROPERTIES = "LayerProperties";
constexpr const char* const NODE = "Node";
constexpr const char* const PARENT = "Parent";
}
LayerInfoFileModule::LayerInfoFileModule() :
_layerInfoCount(0)
{
_standardLayerList.insert(0);
}
std::string LayerInfoFileModule::getName()
{
return "Layer Mapping";
}
void LayerInfoFileModule::clear()
{
_layerInfoCount = 0;
_output.str(std::string());
_output.clear();
_layerNameBuffer.str(std::string());
_layerNameBuffer.clear();
_layerHierarchyBuffer.str(std::string());
_layerHierarchyBuffer.clear();
_layerNames.clear();
_layerMappings.clear();
_layerParentIds.clear();
_activeLayerId = 0;
_hiddenLayerIds.clear();
}
void LayerInfoFileModule::onInfoFileSaveStart()
{
clear();
}
void LayerInfoFileModule::onBeginSaveMap(const scene::IMapRootNodePtr& root)
{
// Open a "Layers" block
_layerNameBuffer << "\t" << LAYERS << std::endl;
_layerNameBuffer << "\t{" << std::endl;
// Open a separate block for the parent-child relationships
_layerHierarchyBuffer << "\t" << LAYER_HIERARCHY << std::endl;
_layerHierarchyBuffer << "\t{" << std::endl;
// Visit all layers and write them to the stream
auto& layerManager = root->getLayerManager();
layerManager.foreachLayer([&](int layerId, const std::string& layerName)
{
_layerNameBuffer << "\t\t" << LAYER << " " << layerId << " { " << layerName << " }" << std::endl;
_layerHierarchyBuffer << "\t\t" << LAYER << " " << layerId << " " << PARENT << " { " << layerManager.getParentLayer(layerId) << " }" << std::endl;
if (!layerManager.layerIsVisible(layerId))
{
_hiddenLayerIds.push_back(layerId);
}
});
_activeLayerId = layerManager.getActiveLayer();
// Close both blocks
_layerNameBuffer << "\t}" << std::endl;
_layerHierarchyBuffer << "\t}" << std::endl;
}
void LayerInfoFileModule::onFinishSaveMap(const scene::IMapRootNodePtr& root)
{}
void LayerInfoFileModule::onSavePrimitive(const INodePtr& node, std::size_t entityNum, std::size_t primitiveNum)
{
saveNode(node);
}
void LayerInfoFileModule::onSaveEntity(const INodePtr& node, std::size_t entityNum)
{
saveNode(node);
}
void LayerInfoFileModule::saveNode(const INodePtr& node)
{
// Don't export the layer settings for models and particles, as they are not there
// at map load/parse time - these shouldn't even be passed in here
assert(Node_isEntity(node) || Node_isPrimitive(node));
// Open a Node block
_output << "\t\t" << NODE << " { ";
auto layers = node->getLayers();
// Write a space-separated list of node IDs
for (const auto& i : layers)
{
_output << i << " ";
}
// Close the Node block
_output << "}";
// Write additional node info, for easier debugging of layer issues
_output << " // " << getNodeInfo(node);
_output << std::endl;
_layerInfoCount++;
}
void LayerInfoFileModule::writeBlocks(std::ostream& stream)
{
// Write the layer names block
stream << _layerNameBuffer.str();
// Write the layer properties block
stream << "\t" << LAYER_PROPERTIES << std::endl;
stream << "\t{" << std::endl;
stream << "\t\t" << ACTIVE_LAYER << " { " << _activeLayerId << " }" << std::endl;
stream << "\t\t" << HIDDEN_LAYERS << " { " << string::join(_hiddenLayerIds, " ") << " }" << std::endl;
stream << "\t}" << std::endl;
// Write the layer hierarchy block
stream << _layerHierarchyBuffer.str();
// Write the NodeToLayerMapping block
stream << "\t" << NODE_TO_LAYER_MAPPING << std::endl;
stream << "\t{" << std::endl;
// Write the output buffer to the stream
if (_output.tellp() > 0)
{
stream << _output.rdbuf();
}
// Closing braces of NodeToLayerMapping block
stream << "\t}" << std::endl;
rMessage() << _layerInfoCount << " node-to-layer mappings written." << std::endl;
}
void LayerInfoFileModule::onInfoFileSaveFinished()
{
clear();
}
void LayerInfoFileModule::onInfoFileLoadStart()
{
clear();
}
bool LayerInfoFileModule::canParseBlock(const std::string& blockName)
{
return blockName == LAYERS || blockName == NODE_TO_LAYER_MAPPING ||
blockName == LAYER_HIERARCHY || blockName == LAYER_PROPERTIES;
}
void LayerInfoFileModule::parseBlock(const std::string& blockName, parser::DefTokeniser& tok)
{
assert(canParseBlock(blockName));
if (blockName == LAYERS)
{
parseLayerNames(tok);
}
else if (blockName == NODE_TO_LAYER_MAPPING)
{
parseNodeToLayerMapping(tok);
}
else if (blockName == LAYER_HIERARCHY)
{
parseLayerHierarchy(tok);
}
else if (blockName == LAYER_PROPERTIES)
{
parseLayerProperties(tok);
}
}
void LayerInfoFileModule::parseLayerNames(parser::DefTokeniser& tok)
{
// The opening brace
tok.assertNextToken("{");
while (tok.hasMoreTokens())
{
std::string token = tok.nextToken();
if (token == LAYER)
{
// Get the ID
std::string layerIDStr = tok.nextToken();
int layerID = string::convert<int>(layerIDStr);
tok.assertNextToken("{");
// Assemble the name
std::string name;
token = tok.nextToken();
while (token != "}")
{
name += token;
token = tok.nextToken();
}
rDebug() << "[InfoFile]: Parsed layer #" << layerID << " with name " << name << std::endl;
_layerNames.emplace(layerID, name);
continue;
}
if (token == "}")
{
break;
}
}
}
void LayerInfoFileModule::parseNodeToLayerMapping(parser::DefTokeniser& tok)
{
// The opening brace
tok.assertNextToken("{");
while (tok.hasMoreTokens())
{
std::string token = tok.nextToken();
if (token == NODE)
{
tok.assertNextToken("{");
// Create a new LayerList
_layerMappings.push_back(scene::LayerList());
while (tok.hasMoreTokens())
{
std::string nodeToken = tok.nextToken();
if (nodeToken == "}")
{
break;
}
// Add the ID to the list
_layerMappings.back().insert(string::convert<int>(nodeToken));
}
}
if (token == "}")
{
break;
}
}
}
void LayerInfoFileModule::parseLayerHierarchy(parser::DefTokeniser& tok)
{
// The opening brace
tok.assertNextToken("{");
while (tok.hasMoreTokens())
{
std::string token = tok.nextToken();
if (token == LAYER)
{
int layerId = string::convert<int>(tok.nextToken());
// The block just contains the parent ID
tok.assertNextToken(PARENT);
tok.assertNextToken("{");
auto parentLayerId = string::convert<int>(tok.nextToken());
tok.assertNextToken("}");
if (parentLayerId != -1)
{
rDebug() << "[InfoFile]: Layer #" << layerId << " is a child of " << parentLayerId << std::endl;
}
_layerParentIds.emplace(layerId, parentLayerId);
continue;
}
if (token == "}")
{
break;
}
}
}
void LayerInfoFileModule::parseLayerProperties(parser::DefTokeniser& tok)
{
/*
LayerProperties
{
ActiveLayer { 9 }
HiddenLayers { 2 1 6 7 }
}
*/
// The opening brace
tok.assertNextToken("{");
while (tok.hasMoreTokens())
{
auto token = tok.nextToken();
if (token == ACTIVE_LAYER)
{
// The block just contains the active layer ID, only a single one is supported
tok.assertNextToken("{");
_activeLayerId = string::convert<int>(tok.nextToken(), -1);
tok.assertNextToken("}");
if (_activeLayerId != -1)
{
rDebug() << "[InfoFile]: ActiveLayer ID could not be parsed: " << _activeLayerId << std::endl;
}
continue;
}
if (token == HIDDEN_LAYERS)
{
// The block just contains a list of delimited layer IDs (or nothing)
tok.assertNextToken("{");
while (tok.hasMoreTokens())
{
auto nodeToken = tok.nextToken();
if (nodeToken == "}") break;
// Add the ID to the list
_hiddenLayerIds.push_back(string::convert<int>(nodeToken));
}
continue;
}
if (token == "}") break;
}
}
void LayerInfoFileModule::applyInfoToScene(const IMapRootNodePtr& root, const map::NodeIndexMap& nodeMap)
{
auto& layerManager = root->getLayerManager();
// Create the layers according to the data found in the map information file
for (const auto& [id, name] : _layerNames)
{
// Create the named layer with the saved ID
layerManager.createLayer(name, id);
}
// Set the active layer before setting visibility
if (_activeLayerId != 0)
{
layerManager.setActiveLayer(_activeLayerId);
}
// Assign layer visibility status before the hierarchy is restored
// this way we don't implicitly set the child layer visibility
for (auto hiddenLayerId : _hiddenLayerIds)
{
layerManager.setLayerVisibility(hiddenLayerId, false);
}
// Assigning child and parent layers needs to happen after all layers have been created
for (const auto& [childLayerId, parentLayerId] : _layerParentIds)
{
layerManager.setParentLayer(childLayerId, parentLayerId);
}
// Set the layer mapping iterator to the beginning
auto mapping = _layerMappings.begin();
// Assign the layers
root->foreachNode([&](const INodePtr& node)
{
// To prevent all the support node types from getting layers assigned
// filter them out, only Entities and Primitives get mapped in the info file
if (Node_isEntity(node) || Node_isPrimitive(node))
{
// Check if the node index is out of bounds
if (mapping == _layerMappings.end())
{
node->assignToLayers(_standardLayerList);
return true;
}
// Retrieve the next set of layer mappings and assign them
node->assignToLayers(*(mapping++));
return true;
}
// All other node types inherit the layers from their parent node
// Model / particle / target line
if (auto parent = node->getParent(); parent)
{
node->assignToLayers(parent->getLayers());
}
return true;
});
rDebug() << "Sanity-checking the layer assignments...";
// Sanity-check the layer mapping, it's possible that some .darkradiant
// files are mapping nodes to non-existent layer IDs
LayerValidityCheckWalker checker;
root->traverseChildren(checker);
rDebug() << "done, had to fix " << checker.getNumFixed() << " assignments." << std::endl;
}
void LayerInfoFileModule::onInfoFileLoadFinished()
{
clear();
}
}